Revert "gpio/omap: don't create an IRQ mapping for every GPIO on DT"

This reverts commit 0e970cec.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/gpio/gpio-omap.c

@@ -1068,49 +1068,23 @@ static void omap_gpio_chip_init(struct gpio_bank *bank)
 
 	gpiochip_add(&bank->chip);
 
-	/*
-	 * REVISIT these explicit calls to irq_create_mapping()
-	 * to do the GPIO to IRQ domain mapping for each GPIO in
-	 * the bank can be removed once all OMAP platforms have
-	 * been migrated to Device Tree boot only.
-	 * Since in DT boot irq_create_mapping() is called from
-	 * irq_create_of_mapping() only for the GPIO lines that
-	 * are used as interrupts.
-	 */
-	if (!bank->chip.of_node)
-		for (j = 0; j < bank->width; j++)
-			irq_create_mapping(bank->domain, j);
-	irq_set_chained_handler(bank->irq, gpio_irq_handler);
-	irq_set_handler_data(bank->irq, bank);
-}
-
-static const struct of_device_id omap_gpio_match[];
-
-static int omap_gpio_irq_map(struct irq_domain *d, unsigned int virq,
-			     irq_hw_number_t hwirq)
-{
-	struct gpio_bank *bank = d->host_data;
-
-	if (!bank)
-		return -EINVAL;
-
-	irq_set_lockdep_class(virq, &gpio_lock_class);
-	irq_set_chip_data(virq, bank);
+	for (j = 0; j < bank->width; j++) {
+		int irq = irq_create_mapping(bank->domain, j);
+		irq_set_lockdep_class(irq, &gpio_lock_class);
+		irq_set_chip_data(irq, bank);
 		if (bank->is_mpuio) {
-		omap_mpuio_alloc_gc(bank, virq, bank->width);
+			omap_mpuio_alloc_gc(bank, irq, bank->width);
 		} else {
-		irq_set_chip_and_handler(virq, &gpio_irq_chip,
+			irq_set_chip_and_handler(irq, &gpio_irq_chip,
 						 handle_simple_irq);
-		set_irq_flags(virq, IRQF_VALID);
+			set_irq_flags(irq, IRQF_VALID);
 		}
-
-	return 0;
+	}
+	irq_set_chained_handler(bank->irq, gpio_irq_handler);
+	irq_set_handler_data(bank->irq, bank);
 }
 
-static struct irq_domain_ops omap_gpio_irq_ops = {
-	.xlate  = irq_domain_xlate_onetwocell,
-	.map    = omap_gpio_irq_map,
-};
+static const struct of_device_id omap_gpio_match[];
 
 static int omap_gpio_probe(struct platform_device *pdev)
 {
@@ -1177,10 +1151,10 @@ static int omap_gpio_probe(struct platform_device *pdev)
 	}
 
 	bank->domain = irq_domain_add_legacy(node, bank->width, irq_base,
-					     0, &omap_gpio_irq_ops, bank);
+					     0, &irq_domain_simple_ops, NULL);
 #else
 	bank->domain = irq_domain_add_linear(node, bank->width,
-					     &omap_gpio_irq_ops, bank);
+					     &irq_domain_simple_ops, NULL);
 #endif
 	if (!bank->domain) {
 		dev_err(dev, "Couldn't register an IRQ domain\n");